thumbnails error

[effe7]

I installed version 2.7.5 but I have the following problems:
- Does not create thumbnails for all images.
- When creating thumbnails is a blank page.
- You can not rebuild thumbnails.

site address is http://www.enoristorantegallonero.it/it ... ianti.html

help me!!!
thanks

[Jan]

Hi, to see the error, you need to enable php error reporting

https://www.phoca.cz/documents/16-joomla ... rs-on-site